56657 Full Form. Full Meaning of 56657 Find long form and abbreviation, slang or definition of 56657. What does 56657 mean? What does 56657 stand for? We are providing world largest and most comprehensive acronyms, names, abbreviations database directory on the Internet. Our data base contains more than 8,00,000 terms abbreviations and acronyms. You can also search unique terms more than 4,00,000 general Comprehensive words.